FLEXIBLE DIRECT DRIVE BOGIE

摘要

A flexible direct drive bogie comprises: a bogie frame two permanent magnet motors (4 4 ) respectively located at the front side and the back side of the bogie frame an air spring (9) arranged above the bogie frame and a front back wheel pair arranged below the bogie frame. The bogie frame has a left frame (1) and a right frame (8) middle parts of the left and right frames are fixedly connected as a whole through a flexible beam (13) formed by four steel plates a gap is left between the four steel plates the axle of the wheel pair penetrates central through holes arranged on the permanent magnet motors (4 4 ) output shafts at two ends of the permanent magnet motors (4 4 ) are fixed respectively through an elastic gearing (3) and two wheels (2) of the wheel pair so that the permanent magnet motors (4 4 ) are suspended between the wheel pair shells of the two permanent magnet motors (4 4 ) are connected through a longitudinal connecting rod (6) a transition plate (7) for fixedly connecting the air spring (9) and the vehicle body is arranged above the air spring (9) in a crossing manner a traction drawbar base (18) is mounted at the central position of the lower end surface of the transition plate (7) the traction drawbar base (18) is provided with a traction body (19) a left end and a right end of the traction body (19) are provided with traction drawbars (5 5 ) respectively one traction drawbar (5) is connected to the shell of a permanent magnet motor (4) at the front side and the other traction drawbar (5 ) is connected to the shell of a permanent magnet motor (4 ) at the back side. The flexible beam is used so that the frame flexibility is implemented; relative nodding motion is easy to the left and right frames so as to adapt to large twists of tracks; the elastic gearing enables the permanent magnet motors to be elastically suspended and to transfer a torque so that the gearing efficiency is improved and the weight of the gearing mechanism is reduced; the traction force and braking force are directly transferred to the vehicle body so that the force bearing condition of the bogie frame is enhanced the riding comfort of the vehicle is improved and excellent adaptation to uneven lines is achieved.